<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="utf-8" />
    <title>语义化</title>
    <style>
        h6 {
            font-size: 50px;
        }
    </style>
</head>

<body>
    <h1>标题</h1>
    <h6>标题</h6>
</body>

</html>